Welcome to our dedicated page for U. S. Steel SEC filings (Ticker: X), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
The United States Steel Corporation (U. S. Steel) SEC filings page for the historical ticker X provides access to the company’s regulatory disclosures as a former standalone public issuer. These documents include current reports, annual and quarterly filings, and transaction-related materials that explain how the company operated before and during its acquisition by Nippon Steel North America, Inc.
Among the key filings is the Form 8‑K dated June 25, 2025, which describes the completion of the merger under the Agreement and Plan of Merger dated December 18, 2023. That filing explains that 2023 Merger Subsidiary, Inc. merged with and into U. S. Steel on June 18, 2025, with U. S. Steel surviving as a subsidiary of Nippon Steel North America, Inc. It also outlines changes to the board of directors and officers and summarizes the National Security Agreement under which U. S. Steel will issue a Class G Preferred Stock “Golden Share” to the U.S. Government, granting specified rights related to governance, domestic production, and trade matters.
This page also reflects U. S. Steel’s Form 15 (15‑12G) filed on June 30, 2025, which certifies the termination of registration of its common stock and certain senior notes under Section 12(g) of the Securities Exchange Act of 1934 and the suspension of its duty to file reports under Sections 13 and 15(d), relying on Rules 12g‑4(a)(1) and 12h‑3(b)(1)(i). That filing notes the approximate number of holders of record of the company’s common stock and specified senior notes as of the certification date.
Using this page, researchers can review how U. S. Steel reported its business segments, capital structure, and major corporate events while it was listed on the New York Stock Exchange under the symbol X. AI-powered tools on the platform can help summarize complex filings, highlight key sections in transaction documents, and make it easier to understand the implications of forms such as 8‑K and 15‑12G for the company’s trading status and governance.
United States Steel Corporation has filed Post-Effective Amendments to deregister all remaining unissued shares from multiple S-8 Registration Statements following its merger with Nippon Steel North America, which became effective on June 18, 2025.
The deregistration affects 24 different Registration Statements covering various employee benefit plans including:
- 2016 Omnibus Incentive Compensation Plan
- Savings Fund Plan for Salaried Employees
- 401(k) Plan for USW-Represented Employees
- Big River Steel 401(k) Plan
- Stock Incentive Plans and other compensation programs
This filing is a result of the merger agreement dated December 18, 2023, where 2023 Merger Subsidiary Inc. merged with U.S. Steel, with U.S. Steel surviving as a wholly owned subsidiary of Nippon Steel North America. The company is terminating all offerings under these Registration Statements as part of the merger completion.
United States Steel Corporation (NYSE: X) filed multiple Post-Effective Amendments to 23 historical Form S-8 registration statements on 18 June 2025.
Key facts:
- The amendments formally deregister any shares of common stock that remained unissued under a range of equity and savings plans, including the 2002 Stock Plan, 2005 Stock Incentive Plan, 2016 Omnibus Incentive Compensation Plan, several 401(k) and savings plans, and legacy plans covering salaried and USW-represented employees.
- Deregistration follows the closing of the merger with Nippon Steel North America, Inc. (“Parent”) under the Agreement and Plan of Merger dated 18 December 2023. Merger Sub was merged into U. S. Steel, making the registrant a wholly owned subsidiary of Parent effective 18 June 2025.
- The filing states that, consistent with the undertakings in each S-8, the company is terminating all offerings under the affected plans and removing the unsold securities from registration.
Investor takeaway: The action is an administrative step required after the completion of the acquisition; it does not introduce new financial data, alter consideration already received by former shareholders, or affect ongoing public-market trading because U. S. Steel equity is now privately held by Nippon Steel. The filing is therefore largely procedural with no direct valuation impact for public investors.
United States Steel Corporation (USS, symbol: X) has filed a series of Post-Effective Amendment No. 1 or No. 3 filings to 24 previously effective Form S-8 registration statements covering tens of millions of shares reserved for various employee benefit and incentive plans. The Amendments deregister all remaining unsold shares that had been authorised under those plans.
The action follows the closing of the merger with Nippon Steel North America, Inc. on 18 June 2025, whereby Merger Sub was merged into USS and the company became a wholly-owned subsidiary of the parent entity. Because the issuer’s publicly traded equity will no longer be issued under the referenced plans, the company is terminating the offerings and removing the securities from registration, fulfilling its undertaking under each Form S-8.
No new financial metrics are provided, and the filing is administrative in nature; however, it confirms legal completion of the transaction first announced on 18 December 2023. Investors should note that the company’s equity securities will now be held privately by the acquirer, and previously registered share reserves for employee stock and savings plans have been withdrawn.